Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems
The determination of the NMR spin–spin relaxation rate of water in (purely) aqueous particulate dispersions has been shown to be a convenient and facile experimental approach to probing the composition of near particle surface structures. Here, a systematic study has been undertaken of both non-aque...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Series: | Physchem |
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| Online Access: | https://www.mdpi.com/2673-7167/2/3/16 |
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| author | Zahra Alaei Beatrice Cattoz Peter John Dowding Peter Charles Griffiths |
| author_facet | Zahra Alaei Beatrice Cattoz Peter John Dowding Peter Charles Griffiths |
| author_sort | Zahra Alaei |
| collection | DOAJ |
| description | The determination of the NMR spin–spin relaxation rate of water in (purely) aqueous particulate dispersions has been shown to be a convenient and facile experimental approach to probing the composition of near particle surface structures. Here, a systematic study has been undertaken of both non-aqueous and mixed aqueous–non-aqueous solvent particulate dispersions to explore the universality of the solvent relaxation technique. As in the aqueous case, a linear relationship between the surface area present and the solvent relaxation rate is observed, confirming the rapid exchange of the solvent molecules between the surface and the bulk and thereby illustrating the viability of the experimental methodology to study such systems. Crucially, the surface enhancement effect was considerably weaker in non-aqueous systems compared with aqueous dispersions and reflects a potential limitation of the wider deployment of this experimental methodology. |
| first_indexed | 2024-03-09T22:48:19Z |
| format | Article |
| id | doaj.art-4a9aa2c425a9475c951b03bfaff18fb8 |
| institution | Directory Open Access Journal |
| issn | 2673-7167 |
| language | English |
| last_indexed | 2024-03-09T22:48:19Z |
| publishDate | 2022-07-01 |
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| record_format | Article |
| series | Physchem |
| spelling | doaj.art-4a9aa2c425a9475c951b03bfaff18fb82023-11-23T18:25:20ZengMDPI AGPhyschem2673-71672022-07-012322423410.3390/physchem2030016Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous SystemsZahra Alaei0Beatrice Cattoz1Peter John Dowding2Peter Charles Griffiths3School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UKInfineum International Ltd., Milton Hill Business and Technology Centre, Abingdon OX13 6BB, UKInfineum International Ltd., Milton Hill Business and Technology Centre, Abingdon OX13 6BB, UKSchool of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UKThe determination of the NMR spin–spin relaxation rate of water in (purely) aqueous particulate dispersions has been shown to be a convenient and facile experimental approach to probing the composition of near particle surface structures. Here, a systematic study has been undertaken of both non-aqueous and mixed aqueous–non-aqueous solvent particulate dispersions to explore the universality of the solvent relaxation technique. As in the aqueous case, a linear relationship between the surface area present and the solvent relaxation rate is observed, confirming the rapid exchange of the solvent molecules between the surface and the bulk and thereby illustrating the viability of the experimental methodology to study such systems. Crucially, the surface enhancement effect was considerably weaker in non-aqueous systems compared with aqueous dispersions and reflects a potential limitation of the wider deployment of this experimental methodology.https://www.mdpi.com/2673-7167/2/3/16NMR spin–spin relaxation timespecific relaxation rateaverage relaxation ratesolvent compositionsolvent polarity |
| spellingShingle | Zahra Alaei Beatrice Cattoz Peter John Dowding Peter Charles Griffiths Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems Physchem NMR spin–spin relaxation time specific relaxation rate average relaxation rate solvent composition solvent polarity |
| title | Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems |
| title_full | Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems |
| title_fullStr | Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems |
| title_full_unstemmed | Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems |
| title_short | Solvent Relaxation NMR as a Tool to Study Particle Dispersions in Non-Aqueous Systems |
| title_sort | solvent relaxation nmr as a tool to study particle dispersions in non aqueous systems |
| topic | NMR spin–spin relaxation time specific relaxation rate average relaxation rate solvent composition solvent polarity |
| url | https://www.mdpi.com/2673-7167/2/3/16 |
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